97 lines
2.7 KiB
JavaScript
97 lines
2.7 KiB
JavaScript
// Copyright 2015, 2016 Ethcore (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// Parity is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import { Logging } from '../../subscriptions';
|
|
import JsonRpcBase from '../jsonRpcBase';
|
|
|
|
/* global fetch */
|
|
export default class Http extends JsonRpcBase {
|
|
constructor (url, connectTimeout = 1000) {
|
|
super();
|
|
|
|
this._connected = true;
|
|
this._url = url;
|
|
this._connectTimeout = connectTimeout;
|
|
|
|
this._pollConnection();
|
|
}
|
|
|
|
_encodeOptions (method, params) {
|
|
const json = this.encode(method, params);
|
|
|
|
this.log(json);
|
|
|
|
return {
|
|
method: 'POST',
|
|
headers: {
|
|
'Accept': 'application/json',
|
|
'Content-Type': 'application/json',
|
|
'Content-Length': json.length
|
|
},
|
|
body: json
|
|
};
|
|
}
|
|
|
|
execute (method, ...params) {
|
|
const request = this._encodeOptions(method, params);
|
|
|
|
return fetch(this._url, request)
|
|
.catch((error) => {
|
|
this._connected = false;
|
|
throw error;
|
|
})
|
|
.then((response) => {
|
|
this._connected = true;
|
|
|
|
if (response.status !== 200) {
|
|
this._connected = false;
|
|
this.error(JSON.stringify({ status: response.status, statusText: response.statusText }));
|
|
console.error(`${method}(${JSON.stringify(params)}): ${response.status}: ${response.statusText}`);
|
|
|
|
throw new Error(`${response.status}: ${response.statusText}`);
|
|
}
|
|
|
|
return response.json();
|
|
})
|
|
.then((response) => {
|
|
Logging.send(method, params, { request, response });
|
|
|
|
if (response.error) {
|
|
this.error(JSON.stringify(response));
|
|
console.error(`${method}(${JSON.stringify(params)}): ${response.error.code}: ${response.error.message}`);
|
|
|
|
throw new Error(`${method}: ${response.error.code}: ${response.error.message}`);
|
|
}
|
|
|
|
this.log(JSON.stringify(response));
|
|
return response.result;
|
|
});
|
|
}
|
|
|
|
_pollConnection = () => {
|
|
if (this._connectTimeout <= 0) {
|
|
return;
|
|
}
|
|
|
|
const nextTimeout = () => setTimeout(this._pollConnection, this._connectTimeout);
|
|
|
|
this
|
|
.execute('net_listening')
|
|
.then(nextTimeout)
|
|
.catch(nextTimeout);
|
|
}
|
|
}
|